Name: Stanislav (email_not_shown)
Date: 04/08/15-11:30:09 PM Z


Okay, several questions have arised...

1. Is there a way to specify my own tensor? Metric and LeviCivita are not enough for me. For example, i'd like this one with lower indices to be specified: phi_mu_nu = diag{0,1,1,0}

Does FeynCalc contract this kind of predefined tensors?

2. When contracting 4 vectors with LeviCivita symbol i get an object like \[Epsilon]^(K2*P1*P2*K1)

I would like either to make this contraction explicit or to replace it with already known expression.

But things like
>>> M = M /. \[Epsilon]^(K2*P1*P2*K1) -> my_expression
do not work. What's going on?



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